Extract Regex Matches from a String
Pull every substring that matches a regular expression. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Extract Regex Matches from a String
- 1. Paste the text to search. Enter the block of text you want searched into the input pane, from a single line to a full document.
- 2. Enter the regular expression. Type the pattern you want to match under Regular expression, and turn on Ignore case if the search should match regardless of letter case.
- 3. Copy the matched substrings. Copy the list of every substring that matched the pattern, one per line, and use it wherever the extracted matches are needed.
When to use Extract Regex Matches from a String
Extract Regex Matches from a String pulls every substring in a block of text that matches a regular expression you provide. It is the general-purpose version of extraction when a specific data type like emails or numbers isn't already built in.
- Pulling hashtags out of social media posts. You have a batch of exported posts and want every hashtag, matched with a pattern like '#\w+', pulled into its own list for a content analysis.
- Extracting IP addresses from a log file. A server log mixes IP addresses with timestamps and messages, and a regex pattern targeting the IP format extracts just the addresses for further review.
- Grabbing quoted strings from source code. You want every double-quoted string literal pulled out of a code file for a quick audit of hardcoded values, using a pattern that matches quoted text.
- Testing a regular expression against sample text. You are writing a regex for use elsewhere and want to verify it captures exactly the substrings you expect from realistic sample text before deploying it.
Examples
Extract all numbers
Input
order 42, item 7
Output
42 7
About the Extract Regex Matches from a String tool
Extract Regex Matches from a String is a free online tool that works entirely inside your web browser. Pull every substring that matches a regular expression. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 159 String utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
You can shape the output with 2 settings, including Regular expression and Ignore case, and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Does Extract Regex Matches from a String cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.